摘要
建立基于简单集中质量的质量慢变Jeffcott转子动力学方程,采用渐近法给出质量慢变转子系统解析分析过程,详细推导质量慢变转子系统响应解析解。研究、讨论具有单一质量慢变模型的转子系统非线性动力学响应,采用重分布小波尺度图对解析结果深入讨论,获得质量慢变转子系统特有的非线性动力学行为。结果可为慢变参数转子系统动力学与故障识别研究提供理论参考。
A dynamic model of simplified-concentrated-mass based Jeffcott rotor system with slowly-varying mass was built.An analytic processing for rotor system with slowly-varying mass was introduced by adopting the asymptotic method.Analytic solutions of the rotor system responses were deducted detailedly.With the analytic solutions and reassigned morlet scalograms,the nonlinear dynamics behaviors of rotor system with slowly-varying mass were discussed. The specific nonlinear dynamic characteristics of rotor system with slowly-varying mass can give a reference to the research on slowly-varying parameter system and diagnosis of corresponding faults.
出处
《振动与冲击》
EI
CSCD
北大核心
2014年第20期105-110,共6页
Journal of Vibration and Shock
基金
国家自然科学基金项目(11202179)
教育部留学回国人员科研启动基金项目(教外司留[2010]1561)
山东省自然科基金项目(ZR2012EEQ006)
关键词
转子系统
质量慢变
渐进法
非线性动力学
时频分析
rotor system
slowly-varying mass
asymptotic method
nonlinear dynamics
time-frequency analysis
